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Table 4 Weighted Cohen’s kappa showing the inter-observer agreement results between the 3 trained observers assessing 31* horses and ponies

From: Assessing the seasonal prevalence and risk factors for nuchal crest adiposity in domestic horses and ponies using the Cresty Neck Score

Observers compared Observed agreement (%) Expected agreement (%) κ w SE Z p
Observer 1 and Observer 2 95.86 89.57 0.60 0.16 3.69 <0.001
Observer 2 and Observer 3 97.16 90.28 0.71 0.17 4.09 <0.001
Observer 1 and Observer 3 94.61 88.30 0.54 0.16 3.26 0.001
  1. *note one observer only assessed 29 horses and ponies.